Adorama offers the Brenthaven Collins Slim Laptop Briefcase in Indigo for $39.99 with free shipping. That's the lowest total price we could find by $26. It measures approximately 14" x 17" x 2" and features a crossbody design, chambray exterior, and cushioned compartment for up to a 15" laptop.
Adorama offers the Think Tank 15" Laptop Briefcase in Harbor Blue for $29.95 with free shipping. That's the lowest total price we could find by $39. It features a rear compartment which holds laptops up to 15", main compartment, front tablet pocket, and seam-sealed rain cover.